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[C++] Optimize ordered aggregation #34475
Description
Describe the enhancement requested
Clean up ordered aggregation (follow-ups from #34311):
- Take advantage of (and enforce) ordering (see this discussion).
- Simplify batch values selection (see this discussion).
- Improve performance of grouping inside the segmenter (see this discussion)
Component(s)
C++
Activity
GH-32884: [C++] Add ordered aggregation (#34311)
thisisnic commentedon Feb 18, 2026
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